The other relevant strand of the data-market literature are two-sided markets where buyers and sellers are separate. [1]} propose a market mechanism for finding prices and distributing welfare while allowing individual prices per buyer. The prices are not allowed to be seller specific. They also not consider the cost of sharing, including privacy costs. Our work extends this model to buyer-seller specific prices in a setup where buyers can also be sellers. We also consider the cost of sharing, as do [2]} and [3]} who study the tradeoff with revenue gain. [4]} discuss the externalities in data privacy.
